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(No Model.)

G. W. McGILL.

v METALLIC FASTENER. No. 308,368. Patented Nov. 25, 1884.

IVENTOR NETED Smarties GEORGE WV. MCGILL, OF NEWV YORK, N. Y.

M ETALLIC FASTENER.

SPECIFICATION forming part of Letters Patent No. 308,368, dated November25, 1884.

Application filed May 5, 1884. (N0 model.)

To all whom it may concern:

Be it known that I, GEORGE WV. McGILL, of the city and'county of NewYork, in the State of New York, have made certain new and usefulImprovements in Metallic Fasteners, of which the following is a full andeXact description, reference being had to the accompanying drawings,making part of the same.

The object of the invention is the production of an improved metallicfastener for fastening or binding together papers, cloths, and such likematerial.

In the drawings, Figure 1 represents the metal blank from which thefastener is formed. Fig. 2 represents the blank folded into fastenerform, with its fasteningshanks in close parallel contact. Fig. 3represents the fastener completed, a metal button-cap being closed orupset upon the capping-head of the folded blank. Fig. 4 represents anunder or bottom View of the complete fastener; and 5 represents avertical section of the fastener, taken on the line 00 as of Fig. 4.Figs. 6 and 7 represent the fastener-blank and completed fastener,respectively, with the fastener-shanks folded or bent at right anglesfrom the fastenerhead on parallel lines, but at some distance apart.

The fastener-blank as shown in Fig. 1 is cut from suitable sheet metal,preferably sheetbrassthat is to say, its central portion, a, is cut in apartly-circular form, with arms I) Z), differing in length, extending onopposite sides of the same, and from a point within what would be thecircular line or periphery of the center were the circle of the lattercomplete. The circular center a forms the capping-head of the fastener,and the arms I) 1) its penetrating or fastening shanks. The blank thusshaped is fashioned into a. complete fastener as follows: \Vhere it isdesired to have the shanks of the fastener arranged in close parallelcontact, so that they will both pass together through the same hole inthe article in which the fastener is inserted, the parts of the blankmarked 1) b are folded toward each other under the center orcapping-head a, and down at right angles from the center of the same, asshown in Fig. 2, and the fastener is completed by upsetting or closingon the capping-head a metal button-cap, d, as shown in Figs. 3, 4, and5. The difference in length of the arms 6 b causes one arm to projectbeyond the other when they are brought together and folded in closeparallel contact, as is shown in Figs. 2, 8, and 5, to facilitate theseparation of the arms in the act of clinching them down on the goodsfastened. There it is desired to have the fastener-shanks some distanceapart, so that each shank will enter a separate hole in the articlesbeing bound or fastened, the arms of the fastener-blank are bent down atright angles from its capping-head a, as shown in Fig. 6, and thefasteneris completed by upsetting or closing a button cap on the head a,as before described, and as shown in Fig. 7.

In bending the fastener-blank into form the arms or shanks I) b arefolded down from the circular head a on a line sufficiently within theperiphery of the same to offer no obstruc tion to the closing of themetal cap (1 directly upon such circular capping head. In the drawingsthis bending-line is indicated by the dotted lines marked 2. Thisarrangement admits of the cap (Z being closed or tumbled over onethickness of metal, and consequently reduces the thickness of the cappedhead from what it would be were the cap closed over projecting ends ofthe folded or doubled shanks. It also assists in holding the shanks atright angles from the fastener-head, and it re-enforces the cap with thecircular center of the fastener-blank, giving additional strength to thefastener as a whole. The projecting points 0 of the central part, a, ofthe blank may be cut away, as shown at c, Fig. 1, without interferingwith the efficient capping of the same.

The fastener is operated by forcing its shanks through the papers orother material being bound with it until the under side of its headrests on one side of the material, and folding its shanks down flat onthe other side of the same,so as to bind the material between the foldedshanks and the fastener-head.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A metallic fastener consisting of a metal disk with two arms integralwith the disk,projecting from opposite sides of the same and bent overin the same direction at right angles 10 and their remainder folded downin close parallel contact at right angles from the center of the disk,and having a detached butt0n-cap,0f the same or other metal, closed uponthe 0pposite side of the disk, substantially as set forth.

GEORGE W. MCGILL.

Witnesses:

HENRY SCOTT, EDWIN A. S. BARKELEW.

